When cleaning a Flat Screen TV or other LED screen without streaks be sure to use a microfiber cloth and spray the microfiber cloth with the water or water and vinegar.
When you spray the screen directly you can get the screen too wet which is one reason that streaks are sometimes left.
Just spray a little bit of the vinegar and water solution onto the microfiber cloth and then gently wipe the screen down.
Be sure to wipe the flat screen TV screen in a circular motion because if you don't then it's possible to leave streaks on the screen.
I always use vinegar and some water with a microfiber cloth to clean my LED TV and LED computer monitors.
I use a spray bottle and mix half with vinegar and half with water and then shake the vinegar and water mixture to mix them up.
Then I spray the microfiber cloth with the vinegar and water and then wipe the LED TV or LED computer monitor down gently.
I've never had a problem with any streaks or anything using vinegar and water to clean the LED screens.
If you use a regular rag or paper towel you might get particles from the paper towels or lint from a wash cloth on the screen.
But if you use a microfiber cloth then there won't be any particles or lint left on the LED TV or LED monitor.
Windex Foaming cleanser is also a good way to clean a flat screen TV or other LED screens without streaking them.
Just be sure to wipe the screen in a circular motion to avoid streaks and always use a microfiber cloth.